CN102905306B

CN102905306B - Cell switching method, base station equipment and subscriber equipment

Info

Publication number: CN102905306B
Application number: CN201110211805.7A
Authority: CN
Inventors: 时洁
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2011-07-27
Filing date: 2011-07-27
Publication date: 2016-09-14
Anticipated expiration: 2031-07-27
Also published as: WO2013013573A1; CN102905306A

Abstract

The embodiment of the present invention provides a kind of cell switching method, base station equipment and subscriber equipment, and the method includes: the measurement report sent according to subscriber equipment and/or the translational speed of subscriber equipment, determines the handover type of subscriber equipment；When determining that handover type is part switching type, to target BS transmitting portion handover request, the PDCCH that this part handover request is monitored for request target base station configuration subscriber equipment.The embodiment of the present invention can carry out part switching to the business of subscriber equipment, target BS configure the PDCCH of subscriber equipment monitoring rather than the business of subscriber equipment is all switched to target BS, thus mutual burden when decreasing switching.

Description

Cell switching method, base station equipment and subscriber equipment

Technical field

The present embodiments relate to communication technical field, and more particularly, to cell switching method, Base station equipment and subscriber equipment.

Background technology

Heterogeneous network can improve covering and the capacity of mobile network.With LTE (Long Term Evolution, Long Term Evolution) as a example by heterogeneous network, in Macro eNB (macro base station) coverage, place small-sized base Stand, as Pico (micro-base station), HeNB (Home eNB, Home eNodeB), Femto (femto base station), The WAPs such as Relay (relay base station).UE (User Equipment, subscriber equipment) is in grand Under the Double mulch of base station and small base station.All base stations can use to be disposed with frequency, it would however also be possible to employ different Frequency is disposed.The heap(ed) capacity that heterogeneous network system is obtained in that is the capacity sum of macro base station and small base station, The LTE macro base station network that whole communication system is the most traditional has higher capacity.Office buildings, Under the scene such as market, campus network, utilize the isomery of these small base stations and macro base station to dispose, can effectively increase The strong network coverage, promotes spectrum efficiency.Small base station can be to use wired or wireless mode access network.

Under heterogeneous network, network design is complicated, there is such a phenomenon, and UE is with at a high speed by different Network forming network, passes through the coverage of one or more small base station in the range of macro base station covers.In order to Ensureing the handling capacity of whole system, UE should be switched to small base station, reduces the load of macro base station.This needs The information that source base station is relevant to switching alternately with target BS and core net, be connected with core net is up It is switched to target BS from source base station with downlink data pipeline.

The data of UE are divided into upstream data and downlink data, and upstream data issues base station from UE, then by base Core net is given at station.Downlink data issues base station from core net, then is given to UE by base station.Under UE obtains When row data and related control information, need the control territory part sum of the down channel of monitoring wireless channel According to territory part.UE also utilizes the data field of up channel to send the data message of oneself, the control of up channel Territory processed sends up relevant control information.

When carrying out macro base station to the switching of small base station, the Serving cell of current UE is macro base station, should UE is to Serving cell and the neighbor cell of surrounding, and each carrier frequency, performs event or periodicity The measurement triggered.When measurement meets some requirements, the result of measurement is reported macro base station by UE.As Really macro base station determines UE is switched to small base station, then can initiate handover request to small base station.If Small base station agrees to this handover request, then can reply handover request ack message, and carry within the message Target BS is to the relevant information of UE, for UE wireless access to target BS.Source base station utilizes switching Command messages forwards that information to UE, UE to start to initiate Stochastic accessing at wave point to small base station Process, is linked into target BS.Consider from data surface, for downlink data, obtain switching at macro base station During request response, the lower line number that macro base station can will obtain from CN (Core Network, core net) According to being given to small base station, by small base station after UE is successfully accessed, issue downlink data.Small base station The conversion message Pathswitch (road of the downlink data channel of core net and base station side is provided to core net simultaneously Footpath switches), downlink data channel is forwarded to small base station side by core net after receiving this information.Then, core Descending packet is sent to target BS by net, and to the source base station i.e. packet of macro base station plus end Mark (end mark).To upstream data, when macro base station obtains handover request ack message, macro base station While the upstream data obtained from UE is issued core net, the upstream data bag that last is sent Sequence number be given to small base station.After UE is successfully accessed to small base station, small base station is based on this data packet sequence Number and CN server pipeline address information in handover request message, initiate upstream data to CN net Transmission.UE leaves small base station, and to be switched to the process of macro base station similar.

But, if UE high-speed motion, and small base station coverage is little, then and UE is switched to little Just leave in time the shortest after type base station.The switching of this short-term adds a base station and core net Mutual burden, the throughput gains brought is the most inconspicuous.Particularly it is being continuous across several small-sized bases Under the scene stood, this continuous switching brings system burden.

Summary of the invention

The embodiment of the present invention provides a kind of cell switching method, base station equipment and subscriber equipment, it is possible to reduce Mutual burden during switching.

On the one hand, it is provided that a kind of cell switching method, including the measurement report sent according to subscriber equipment Accuse and/or the translational speed of subscriber equipment, determine that the handover type of subscriber equipment is part switching class Type, wherein in part switching type, the PDCCH of subscriber equipment needs to switch to target BS；To Target BS transmitting portion handover request, this part handover request sets for request target base station configuration user The standby PDCCH monitored.

On the other hand, it is provided that a kind of method of reporting measurement reports, including: macro base station is to subscriber equipment The identification information of broadcast small base station and/or carrier frequency information, or configure to subscriber equipment sending measuring, this survey Amount configuration comprises identification information and/or the carrier frequency information of small base station；Macro base station receives what subscriber equipment sent Measurement report, wherein, when broadcasting identification information and/or the carrier frequency information of small base station to subscriber equipment, This measurement report carries identification information and/or the carrier frequency information of the small base station of correspondence, under subscriber equipment When sending out measurement configuration, this measurement report carries the measurement result corresponding to measuring configuration.

On the other hand, it is provided that a kind of cell switching method, including: receive the part that source base station sends and cut Changing request, the physical down that part handover request is monitored for request target base station configuration subscriber equipment controls Channel PDCCH；Send the response message for part handover request to source base station or switching prepares unsuccessfully Message, response message represents that target BS agrees to that part handover request, switching prepare failed message and represent mesh Mark base station refusal part handover request.

On the other hand, it is provided that a kind of cell switching method, including: receive the part that source base station sends and cut Change order, partial handover command corresponding part switching type, and in part switching type, subscriber equipment Physical downlink control channel PDCCH need to switch to target BS；Based on partial handover command, prison Listen the PDCCH after switching, the PDCCH after switching be target BS be user device configuration.

On the other hand, it is provided that a kind of method of reporting measurement reports, including: receive base station broadcast little The identification information of type base station and/or carrier frequency information, or receive the measurement configuration that base station issues, wherein measure Configuration comprises identification information and/or the carrier frequency information of small base station, sends measurement report, Qi Zhong to base station When receiving identification information and/or the carrier frequency information of the small base station of base station broadcast, measurement report carries correspondence The identification information of small base station and/or carrier frequency information, or receiving the measurement configuration that base station issues Time, measurement report carries the measurement result corresponding to measuring configuration.

On the other hand, it is provided that a kind of base station equipment, unit is comprised determining that, for according to subscriber equipment The measurement report sent and/or the translational speed of subscriber equipment, determine that the handover type of subscriber equipment is Part switching type, wherein in part switching type, the PDCCH of subscriber equipment needs to switch to mesh Mark base station；Request unit, for target BS transmitting portion handover request, part handover request is used for The physical downlink control channel PDCCH that request target base station configuration subscriber equipment is monitored.

On the other hand, it is provided that a kind of base station equipment, including: reception unit, it is used for receiving source base station and sends out The part handover request sent, the thing that part handover request is monitored for asking base station equipment configuration subscriber equipment Reason down control channel PDCCH；Response unit, for sending for part handover request to source base station Response message or switching prepare failed message, and response message represents that target BS agrees to part handover request, Switching prepares failed message and represents that target BS refuses part handover request.

On the other hand, it is provided that a kind of base station equipment, including: transmitting element, for wide to subscriber equipment Broadcasting identification information and/or the carrier frequency information of small base station, or configure to subscriber equipment sending measuring, measurement is joined Put the identification information and/or carrier frequency information comprising small base station；Receive unit, be used for receiving subscriber equipment and send out The measurement report sent, wherein, in identification information from small base station to subscriber equipment and/or the carrier frequency information of broadcasting Time, measurement report carries identification information and/or the carrier frequency information of the small base station of correspondence, to subscriber equipment During sending measuring configuration, measurement report carries the measurement result corresponding to measuring configuration.

On the other hand, it is provided that a kind of subscriber equipment, including: reception unit, it is used for receiving base station broadcast The identification information of small base station and/or carrier frequency information, or receive the measurement configuration that base station issues, wherein Measuring identification information and/or carrier frequency information that configuration comprises small base station, transmitting element, for sending out to base station Send measurement report, wherein receive the identification information of small base station and/or the carrier frequency information of base station broadcast Time, measurement report carries identification information and/or the carrier frequency information of the small base station of correspondence, or is receiving During the measurement configuration that base station issues, measurement report carries the measurement result corresponding to measuring configuration.

On the other hand, it is provided that a kind of subscriber equipment, including: reception unit, it is used for receiving source base station and sends out The partial handover command sent, partial handover command corresponding part switching type, and in part switching type, The physical downlink control channel PDCCH of subscriber equipment needs to switch to target BS；Monitoring unit, uses In based on partial handover command, monitoring the PDCCH, the PDCCH after switching after switching is target BS For user device configuration.

The embodiment of the present invention can carry out part switching to the business of subscriber equipment, target BS configuration use PDCCH that family equipment is monitored rather than whole for subscriber equipment business are switched to target BS, thus subtract Lack mutual burden during switching.

Accompanying drawing explanation

In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be to embodiment or existing skill In art description, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below It is only some embodiments of the present invention, for those of ordinary skill in the art, is not paying creation Property work on the premise of, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the flow chart of cell switching method according to an embodiment of the invention.

Fig. 2 is the flow chart of cell switching method according to another embodiment of the present invention.

Fig. 3 is the schematic flow diagram of handoff procedure according to an embodiment of the invention.

Fig. 4 is the schematic flow diagram of handoff procedure according to another embodiment of the present invention.

Fig. 5 is the flow chart of the method for reporting measurement reports according to an embodiment of the invention.

Fig. 6 is the flow chart of the method for reporting measurement reports according to an embodiment of the invention.

Fig. 7 is the flow chart of cell switching method according to an embodiment of the invention.

Fig. 8 is the block diagram of base station equipment according to an embodiment of the invention.

Fig. 9 is the block diagram of base station equipment according to another embodiment of the present invention.

Figure 10 is the block diagram of base station equipment according to another embodiment of the present invention.

Figure 11 is the block diagram of base station equipment according to another embodiment of the present invention.

Figure 12 is the block diagram of base station equipment according to another embodiment of the present invention.

Figure 13 is the block diagram of subscriber equipment according to an embodiment of the invention.

Figure 14 is the block diagram of subscriber equipment according to another embodiment of the present invention.

Figure 15 is the block diagram of subscriber equipment according to another embodiment of the present invention.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out Clearly and completely describe, it is clear that described embodiment be a part of embodiment of the present invention rather than Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making wound The every other embodiment obtained under the property made work premise, broadly falls into the scope of protection of the invention.

Technical scheme, can apply to various communication system, such as: global system for mobile telecommunications system System (GSM, Global System of Mobile communication), CDMA (CDMA, Code Division Multiple Access) system, WCDMA (WCDMA, Wideband Code Division Multiple Access Wireless), GPRS (general packet radio service) (GPRS, General Packet Radio Service), Long Term Evolution (LTE, Long Term Evolution) etc..

Subscriber equipment (UE, User Equipment), it is possible to referred to as mobile terminal (Mobile Terminal), mobile subscriber equipment etc., can be through wireless access network (such as, RAN, Radio Access Network) communicating with one or more core net, subscriber equipment can be mobile terminal, such as movement Phone (or be referred to as " honeycomb " phone) and there is the computer of mobile terminal function, for example, it may be just Take formula, pocket, hand-held, built-in computer or vehicle-mounted mobile device, they connect with wireless Network exchange language and/or data.

Base station, can be the base station (BTS, Base Transceiver Station) in GSM or CDMA, Can also be the base station (NodeB) in WCDMA, it is also possible to be the evolved base station (eNB in LTE Or eNodeB, evolutional Node B), the present invention does not limit, but for convenience of description, following reality Execute example to illustrate as a example by eNB.

Fig. 1 is the flow chart of cell switching method according to an embodiment of the invention.The method of Fig. 1 by Source base station performs, such as, performed by the base station of current service subscriber equipment.

101, the measurement report sent according to subscriber equipment and/or the translational speed of subscriber equipment, determine use The handover type of family equipment is part switching type, wherein in part switching type, and subscriber equipment PDCCH need to switch to target BS.

The base station assuming current service UE is macro base station, in its coverage or near coverage There is one or more small base station.At UE through the edge of small base station or center, macro base station can Measurement report according to UE and/or the translational speed of UE, it may be judged whether need to switch over.

Alternatively, in one embodiment, determine that community is cut at the measurement report sent according to subscriber equipment When changing type, measurement report can comprise identification information and/or the carrier frequency information of small base station.Small base station Identification information and/or carrier frequency information can be that macro base station is carried to UE the most in the broadcast.Or, Macro base station can configure to UE sending measuring, the measurement report configured corresponding to this measurement to trigger UE to send. Measure other ginsengs needed for configuration can comprise the identification information of small base station and/or carrier frequency information and measure Number, such as the measurement report threshold etc. of reference signal.Now, in measurement report, portability corresponds to this measurement The measurement result of configuration.So, macro base station can identify the information of small base station according to measurement report, So that it is determined that the type whether UE switches over and switch.

Such as, macro base station, according to measurement report, finds that the channel quality between UE and small base station is more preferable, Then may determine that UE is partly or entirely switched to small base station.

Part switching type in the embodiment of the present invention refers to by target BS configuration subscriber equipment monitoring PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel).As for user The PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel) that equipment is monitored Channel, still can be configured by source base station, or partly or entirely be configured by target BS.At PDSCH In the case of all being configured by target BS, the up-downgoing data of UE can still save with source base station for anchor Point.In part switching type, the PDCCH of only UE is switched to target BS, the up-downgoing of UE Data can be still with source base station as anchor node.

Whole switching types in the embodiment of the present invention are similar to switching of the prior art (handover) place Reason, after completing switching, all channels of UE are all configured by target BS, and the line number up and down of UE According to all by the channel transfer between target BS and core net, the channel resource of source base station release UE.

In another embodiment, when determining switching type, it is further contemplated that the translational speed of UE. For example, it is assumed that the channel quality between UE and small base station has met whole switching type defined Condition, but the translational speed of UE is very fast, and if UE is now all switched to small base station, UE can Can quickly leave small base station, then UE must switch back into macro base station again or to be switched to other small-sized Base station.The switching of this short-term adds the mutual burden of a base station and core net, the handling capacity brought Income is the most inconspicuous.Accordingly it is contemplated that only UE executable portion is switched, the PDCCH that UE is monitored Transfer to small base station to configure, save the mutual burden of network side.

Such as, in LTE, translational speed to UE, can according to the rules the time there is cell change Number of times judges the mobile status of UE, and in LTE, the mobile status of UE is divided into Three Estate, I.e. High-mobility (high-speed mobile) state, Medium-mobility (medium movement) state and Normal-mobility (normally moving) state.According to the mobile status of UE, can to UE switching or The parameter of cell reselection carries out scaling based on speed.

102, to target BS transmitting portion handover request, this part handover request is used for request target base station The PDCCH that configuration subscriber equipment is monitored.

In addition to the instruction information of the PDCCH of request target base station configuration UE monitoring, part switching Can also include other relevant informations in request, such as, part handover request can include the PDSCH of UE Resource information, such as the PDSCH resource block information distributed, corresponding coding or decoded information, right The reference signal information etc. answered, in order to target BS is according to the PDCCH scheduling letter of resource information configuration UE Breath or other control information.Part handover request described in the present embodiment corresponds to described part switching type.

The embodiment of the present invention can carry out part switching to the business of subscriber equipment, the most only by UE's PDCCH switches to target BS, by target BS configuration subscriber equipment monitor PDCCH rather than The business of subscriber equipment is all switched to target BS, thus mutual burden when decreasing switching.

Fig. 2 is the flow chart of cell switching method according to another embodiment of the present invention.The method of Fig. 2 by Target BS performs, and the target BS such as may being partly switched to by subscriber equipment performs.

201, receive the part handover request that source base station sends, this part handover request is used for request target base The PDCCH that configuration subscriber equipment of standing is monitored.

Such as, this part handover request can be the part handover request that source base station sends in above-mentioned 102, Therefore it is not repeated to describe.

202, send the response message for this part handover request to source base station or switching prepares unsuccessfully to disappear Breath, this response message represents that target BS agrees to part handover request, and this switching prepares failed message and represents Target BS refusal part handover request.

Target BS can be according to the running status of self, the such as loading condition etc. of self, it is determined whether with Meaning part handover request.

The embodiment of the present invention can carry out part switching to the business of subscriber equipment, target BS configuration use PDCCH that family equipment is monitored rather than the business of subscriber equipment is all switched to target BS, thus Decrease mutual burden during switching.

Below in conjunction with object lesson, it is described more fully embodiments of the invention.Fig. 3 is according to this The schematic flow diagram of the handoff procedure of a bright embodiment.

It should be noted that in Fig. 3-Fig. 5 as a example by LTE framework, source base station is macro base station eNB, target BS For small base station pico, mobile management network element is that (Mobility Management Entity moves MME Mobility management entity), gateway is S-GW (Serving Gateway).But the embodiment of the present invention is not It is limited to the title of these concrete network elements.Such as, small base station can include RRH (Remote Radio Head, Remote radio-frequency heads) etc..In 2G/3G system, mobile management network element can be SGSN (Serving GPRS Support Node, Serving GPRS Support Node) or S4-SGSN etc., now macro base station is permissible It is referred to as NodeB, BTS etc..These changes each fall within the range of the embodiment of the present invention.

In the fig. 3 embodiment, source base station and target BS are to dispose with frequency, source base station request target base The PDCCH that the configuration UE that stands monitors, but still send lower line number by the PDSCH of source base station to UE According to.

301, UE send measurement report to macro base station eNB.Alternatively, in this measurement report, UE Measurement result based on identification informations such as carrier frequency and/or community ID (mark), wherein, community ID can be reported Can be selected for the PCI (Physical Cell Identity, Physical Cell Identifier) or ECGI (Evolved of community Cell Global Identifier, the Cell Global Identification of evolution).

302, macro base station, according to the measurement report of UE, determines between UE and small base station and macro base station Channel quality, and with reference to the translational speed of UE, decide whether to initiate follow-up switching flow.Wherein Determine whether the information of small base station, PCI or ECGI in the measurement report that can be reported by UE Or frequency, or combinations thereof judges.

303, it is contemplated that the interference disposed with frequency, macro base station determines the configuration of the PDCCH monitored by UE Function is switched to small base station, but the PDSCH of macro base station remains as UE and retains.Macro base station is initiated should The part handover request message of part switching type.In this part handover request message, comprise UE monitor The instruction that configured by small base station of PDCCH, macro base station can also issue UE downlink data in addition The resource information of PDSCH, the time-frequency location information of Resource Block that PDSCH is used, space bit confidence Breath, codec parameters etc. pass to small base station.

304, the PDCCH scheduling of the resource information configuration subscriber equipment that small base station issues according to macro base station Information or other control information.Such as, small base station considers that macro base station is in the PDSCH position with frequency Information can be sent, then can select not send signal in corresponding running time-frequency resource position, or by this time-frequency Resource other UE for other locus use, in order to do not disturb this UE.

305, if small base station agrees to above-mentioned part handover request, small base station sends switching to macro base station Request response.Alternatively, the PDCCH information of portability target BS in this response message, with Just this PDCCH information is sent to UE by macro base station.Such as, this PDCCH information can include being used PDCCH number of sub-frames etc..

If it addition, small base station disagrees part switching, then switching can be sent to macro base station and prepare unsuccessfully Message.Alternatively, portability failure cause during this switching prepares failed message.

306, macro base station initiates partial handover command to UE, and notice UE is switched to Target cell.This portion Switching command is divided to can be similar to existing switching command.Additionally, this partial handover command not only can include The existing scrambling code information for RACH, also includes the resource information of the PDSCH of macro base station, such as institute The PDSCH resource block information of distribution, corresponding coding/decoding information, corresponding reference signal information etc.. This partial handover command can also including, small base station is sent to the PDCCH letter of macro base station in 305 Breath.

307, UE, according to partial handover command, initiate access request to target small base station.

308, small base station sends to UE and accesses response, and UE completes the switching of the part to small base station.

Hereafter, UE obtains downlink data information from the PDSCH of macro base station, and macro base station is at small base station Obtain the ACK/NACK feedback of the downlink data of UE, the i.e. UE HARQ feedback to downlink data Information.The upstream data of UE is sent to small base station, and the HARQ feedback of upstream data is from small-sized base The PHICH (Physical HARQ Indication Channel, Physical HARQ Indicator Channel) stood.

Subsequently, UE can continue to measure the channel quality of macro base station, and by measurement result by UE and little The interface between up channel, small base station and macro base station between type base station, report is to macro base station.Grand Base station can adjust the resource information of the PDSCH of oneself, after the parameters such as encoding and decoding, and adjustment The resource information of PDSCH passes to UE by the PDCCH of small base station.

309, on data surface, for upstream data, small base station can select to be linked at UE small-sized Behind base station, directly set up data feedback channel send the upstream data from UE with core net, it is also possible to select By passage existing between the X2 interface between small base station and macro base station and macro base station and core net Send upstream data.

For downlink data, UE monitors the PDCCH/PHICH of small base station, and monitors macro base station PDSCH。

It should be noted that without being particularly described, transmit on data surface in the embodiment of the present invention is upper Row data or downlink data may refer to the data block that MAC protocol processes, it is also possible to be PDCP (Packet Data Convergence Protocol, PDCP) packet.

310, whole channels of UE, when meeting data surface switching condition, are switched to self by small base station Place.Such as, start to dispatch UE PDCCH (UE monitors the PDCCH/PHICH of small base station, The PDSCH of macro base station) it is continued above the first period D1, or the letter of small base station that UE detects Road continuous quality is higher than the second period of threshold value D2, or detects when the speed of UE declines or stops the 3rd After section D3, for downlink data, small base station sends path switching (Path switch) to MME Request, forwards the down going channel of core net to target BS with request；It addition, for upstream data, little The upstream data of subscriber equipment can be sent to by type base station by the data feedback channel set up between core net Core net.Above-mentioned period D1, D2 and/or D3 can be consulted to determine by source base station and target BS, or Person is stored predetermined D1, D2 and/or D3 by target BS, or source base station by D1, D2 and/ Or D3 carries in part handover request message, it is sent to target BS, or by OAM (Operation Administration and Maintenance；Network management system) configuration D1, D2 and/or D3.

311-315, this path handoff procedure is similar to existing path handoff procedure.Specifically, small-sized base Standing and initiate Path switch request (311) to MME, it is more newly requested that MME sends user face to S-GW (312).The down going channel of CN, according to the more newly requested toggle path in user face (313), is forwarded to by S-GW Small base station, then sends user name more newly requested confirmation message (314) to MME, and MME is to small-sized Transmission path, base station switching request acknowledgement message (315).If macro base station is not by the TNL of CN before (Transport Network Layer；Transport network layer) address is sent to small base station, the grandest base Stand to small base station send the TNL address information of CN pipeline or small base station to macro base station or The TNL address information of MME request CN pipeline, so that small base station obtains the TNL ground of CN pipeline Location information.Further, small base station selects by oneself and the data feedback channel transmission upstream data of CN, no The anchor point transmitted using macro base station as data again.

So, the embodiment of the present invention can carry out part switching to the business of subscriber equipment, by target BS Configure the PDCCH of subscriber equipment monitoring rather than the business of subscriber equipment is all switched to target base Stand, thus mutual burden when decreasing switching.

In the embodiment of Fig. 3, the PDSCH information of UE obtains from macro base station.If it is considered that association Making multicast communication (CoMP, Coordinated Multiple Point) technology, small base station can also be by certainly Oneself PDSCH is for dispatching the information of this UE.Fig. 4 is to switch according to another embodiment of the present invention The schematic flow diagram of journey.

In the fig. 4 embodiment, for the descending data carrying out CoMP, between macro base station and small base station The using method of the PDSCH for CoMP can be consulted.In the diagram, same or similar with Fig. 3 Part use identical reference, and omit detailed description.The difference of Fig. 4 with Fig. 3 is:

303a, is similar to 303, and macro base station is to small base station issued section handover request.

303b, macro base station and small base station consult PDSCH relevant parameter based on CoMP.

Specifically, source base station and target BS consult the resource information of the PDSCH for CoMP, really Determine to be produced transmission block by source base station or target BS.When determining by source base station generation transmission block, to descending Packet, such as PDCP packet, (Media Access Control, media access control to carry out MAC System) process, produce transmission block, and according to the resource information of the PDSCH consulted, fractional transmission block is led to Cross target BS and be sent to subscriber equipment.

Or, determine produced transmission block by target BS time, descending by for subscriber equipment of source base station Packet is sent to target BS, in order to target BS carries out MAC process to downlink data packet, produces Transmission block.Transmission block can be all transferred to source base station by target BS, or according to CoMP needs, will Fractional transmission block is transferred to source base station.

So, the embodiment of the present invention can carry out part switching to subscriber equipment, target BS configuration use PDCCH that family equipment is monitored also transmits a part of packet rather than by user according to CoMP demand Equipment is all switched to target BS, thus mutual burden when decreasing switching.

If disposed additionally, the small base station of UE entrance and macro base station are alien frequencies, then hold from the system of lifting The angle of amount is set out, and UE can select to take the Radio Resource of small base station.In other words, in this situation Under, send downlink data by the PDSCH of target BS to subscriber equipment, but source base station is as user The upstream data of equipment and the anchor point of downlink data.I.e., in the downstream direction, source base station connects from core net The narrowing downlink data to subscriber equipment, and downlink data is sent to target BS, in order to target BS Downlink data is transmitted to subscriber equipment.In the upstream direction, target BS receives up from subscriber equipment Data, and upstream data is transmitted to source base station, source base station by the passage between core net by up Data send to core net.

Such as, macro base station finds the target small base station that can be switched to from the measurement report of UE and is somebody's turn to do Macro base station is that alien frequencies is disposed, then can select when initiating part handover request, up by UE of request All it is switched to small base station with downlink, increases the wireless system capacity of small base station community, but Data stream, still with macro base station as anchor point, is connected with CN.Only when the signal stabilization of small base station When i.e. meeting in the embodiment of Fig. 3 the condition described in 310, small base station can be initiated CN switching and be updated Message, is all switched to here by up, the descending passage towards core net.

Can be in this handover request message, implicit expression or explicitly increase instruction information, show above-mentioned Switching type.

So, the embodiment of the present invention can carry out part switching to the business of subscriber equipment, by target BS PDCCH and PDSCH that configuration subscriber equipment is monitored, but source base station is still as the data anchor of subscriber equipment Point rather than the business of subscriber equipment is all switched to target BS, thus friendship when decreasing switching Burden mutually.

Fig. 5 is the flow chart of the method for reporting measurement reports according to an embodiment of the invention.Fig. 5's Method is performed by base station, such as, performed by the macro base station of current service subscriber equipment.

501, to identification information and/or the carrier frequency information of subscriber equipment broadcast small base station, or set to user Standby sending measuring configures, and this measurement configuration comprises identification information and/or the carrier frequency information of small base station.

The identification information of small base station may select PCI or the ECGI mark of community.Measure configuration can comprise The identification information of small base station and/or carrier frequency information and other parameters needed for measuring, such as reference signal Measurement report threshold etc..

It is interior or adjacent with macro base station that the small base station broadcasted may be at macro base station coverage.Or, The identification information of small base station and/or carrier frequency information or above-mentioned measurement configuration are allocated to grand base by network management system Stand, and be sent to subscriber equipment by macro base station.

502, receive the measurement report that subscriber equipment sends.

Wherein, in 501 when identification information and/or the carrier frequency information of subscriber equipment broadcast small base station, The measurement report received in 502 carries identification information and/or the carrier frequency information of the small base station of correspondence.It addition, In 501 when subscriber equipment sending measuring configures, the measurement report received in 502 carries corresponding to surveying The measurement result of amount configuration.

So, the base station equipment of the embodiment of the present invention can recognize that the measurement report that subscriber equipment is sent Corresponding base station is small base station.

Fig. 6 is the flow chart of the method for reporting measurement reports according to an embodiment of the invention.Fig. 6's Method is performed by subscriber equipment.

601, the small base station that in receiving this base station range of base station broadcast and/or this base station is adjacent Identification information and/or carrier frequency information, or receive the measurement configuration that base station issues, wherein this measurement configuration bag Identification information containing small base station and/or carrier frequency information,

602, the measurement report for small base station is sent to base station.

When wherein receiving identification information and/or the carrier frequency information of the small base station of base station broadcast in 601, This measurement report carries identification information and/or the carrier frequency information of the small base station of correspondence.Or connect in 601 When receiving the measurement configuration that base station issues, this measurement report carries the measurement result corresponding to measuring configuration.

So, the base station equipment of the embodiment of the present invention can recognize that the measurement report that subscriber equipment is sent Corresponding small base station.

The method of Fig. 5 and Fig. 6 can use in conjunction with the method for above-mentioned Fig. 1-Fig. 4.Such as, in 101, The measurement report that base station can send according to the method for Fig. 6 based on subscriber equipment, determines cutting of this subscriber equipment Change type, to target BS issued section handover request.When target BS agrees to part switching, source base Stand to subscriber equipment transmitting portion switching command (for example, referring to 306 in Fig. 3, Fig. 4).

Subscriber equipment is after receiving the partial handover command that base station sends, according to partial handover command, Monitor the PDSCH of source base station, monitor the PDCCH of small base station.Alternatively, subscriber equipment is all right According to partial handover command, monitor the PHICH of small base station.

After part switches to small base station, subscriber equipment can continue to measure the channel quality of source base station Information, and channel quality information is sent to source base station by small base station, in order to source base station is according to channel Quality information adjusts the resource information of PDSCH.The resource information of PDSCH after source base station will adjust is led to Cross target BS and be sent to subscriber equipment.

Fig. 7 is the flow chart of cell switching method according to an embodiment of the invention.The method of Fig. 7 by Subscriber equipment performs.

701, the partial handover command that reception source base station sends, partial handover command corresponding part switching type, And in part switching type, the PDCCH of subscriber equipment needs to switch to target BS.

702, based on partial handover command, monitoring PDCCH, the PDCCH after switching after switching is Target BS is user device configuration.

Alternatively, as an embodiment, subscriber equipment can receive descending by the PDSCH of source base station Data.Or, subscriber equipment can receive downlink data, now source base by the PDSCH of target BS Stand as downlink data and the anchor point of the upstream data of subscriber equipment.

Alternatively, as another embodiment, above-mentioned source base station is macro base station, and above-mentioned target BS is small-sized Base station.

Fig. 8 is the block diagram of base station equipment according to an embodiment of the invention.The base station equipment 80 of Fig. 8 An example be the base station of current service subscriber equipment, including determining unit 81 and request unit 82. Determine that unit 81 and request unit 82 can be processors.

Determine measurement report and/or the translational speed of subscriber equipment that unit 81 sends according to subscriber equipment, The handover type determining subscriber equipment is part switching type, wherein in part switching type, uses The PDCCH of family equipment needs to switch to target BS.Request unit 82 is to determine that unit 81 determines little When district's switching type is part switching type, to target BS transmitting portion handover request, this part switches The PDCCH that request is monitored for request target base station configuration subscriber equipment.

Fig. 9 is the block diagram of base station equipment according to another embodiment of the present invention.The base station equipment 90 of Fig. 9 In, the reference that part use same or analogous with Fig. 8 is identical, and suitably omit detailed description.

In addition to determining unit 81 and request unit 82, base station equipment 90 also includes transmission unit 83, Transmission unit 83 can be interface unit.

In one embodiment, transmission unit 83 passes through the PDSCH of source base station under subscriber equipment sends Row data.Alternatively, in another embodiment, transmission unit 83 receives subscriber equipment pair from target BS The HARQ feedback information of downlink data.

The part handover request of request unit 82 can include the resource information of the PDSCH of subscriber equipment, with Just target BS configures PDCCH schedule information or other control information of subscriber equipment according to resource information.

Alternatively, in another embodiment, when target BS agrees to part handover request, transmission unit 83 also can be from the response message of target BS receiving portion handover request, and this response message represents target BS Agree to part handover request.The PDCCH information of this response message portability target BS.Or, During target BS refusal part handover request, transmission unit 83 is from target BS receiving portion handover request Switching prepares failed message, and this switching prepares failed message and represents that target BS refuses part handover request. Such as, switching prepares failed message portability failure cause.

At transmission unit 83 in the case of the response message of target BS receiving portion handover request, base station Equipment 90 determines that target BS agrees to part handover request, therefore by transmission unit 83 to subscriber equipment Transmitting portion switching command.This partial handover command can include the PDSCH of source base station resource information and/ Or the resource information of the PDCCH of target BS.

For data surface, transmission unit 83 receives the upstream data from subscriber equipment from target BS, and Upstream data is transmitted to core net.

Alternatively, in another embodiment, subscriber equipment can continue to measure the channel quality of base station equipment 90 Information, transmission unit 83 receives the channel quality information of the source base station that subscriber equipment is measured from target BS, Thus base station equipment 90 according to channel quality information, can adjust the resource information of PDSCH, and pass through Transmission unit 83 will adjust after the resource information of PDSCH, be sent to subscriber equipment by target BS.

In the case of considering CoMP technology, base station equipment 90 can also include negotiation element 84.Association Business's unit 84 can be processor, consults to be used for the resource information of the PDSCH of CoMP with target BS, Determine and produced transmission block by source base station or target BS.Wherein when determining by source base station generation transmission block, Base station equipment 90 carries out MAC process to downlink data packet, produces transmission block, and according to the PDSCH consulted Resource information fractional transmission block is sent to subscriber equipment by target BS.It addition, determining by mesh When mark base station produces transmission block, base station equipment 90 is by descending by for subscriber equipment of transmission unit 83 Packet is sent to target BS, in order to target BS carries out MAC process to downlink data packet, produces Transmission block, and receive, by transmission unit 83, the part or all of transmission block that target BS produces.

Alternatively, in another embodiment, such as when source base station and target BS are alien frequencies deployment, in portion Cut during changing, in addition to the PDCCH by target BS configuration subscriber equipment, also by mesh The PDSCH of mark base station sends downlink data to subscriber equipment, and source base station is as the upper line number of subscriber equipment According to the anchor point with downlink data.

Figure 10 is the block diagram of base station equipment according to another embodiment of the present invention.The base station equipment 100 of Figure 10 Example be target BS, including receiving unit 91 and response unit 92.Receiving unit 91 can be to connect Mouth unit, response unit 92 can be processor.

Receiving unit 91 and receive the part handover request that source base station sends, this part handover request is used for asking Base station equipment 90 configures the PDCCH that subscriber equipment is monitored.Response unit 92 sends for portion to source base station The response message or the switching that divide handover request prepare failed message, and response message represents that target BS is agreed to Part handover request, switching prepares failed message and represents that base station equipment 90 refuses part handover request.

Figure 11 is the block diagram of base station equipment according to another embodiment of the present invention.The base station equipment 110 of Figure 11 In, the reference that part use same or analogous with Fig. 9 is identical, and suitably omit detailed description.

In addition to receiving unit 91 and response unit 92, base station equipment 110 also include negotiation element 93, Administrative unit 94 and transmitting element 95.Negotiation element 93 and administrative unit 94 can be processors, send out Sending unit 95 can be interface unit.

In the case of considering CoMP, negotiation element 93 can be consulted for CoMP's with source base station The resource information of PDSCH.In the case, the transmitting element 95 PDSCH by base station equipment 100 Sending downlink data to subscriber equipment, wherein source base station is still as upstream data and the lower line number of subscriber equipment According to anchor point.

Alternatively, in one embodiment, receive unit 91 and also receive subscriber equipment to downlink data HARQ feedback information, and HARQ feedback information is sent to source base station by transmitting element 95.

Include the resource information of PDSCH of subscriber equipment in part handover request in the case of, management is single Unit 94 configures PDCCH schedule information or the information of control of user according to resource information.

Alternatively, in another embodiment, receive unit 91 and be additionally operable to receive upstream data from subscriber equipment, Then upstream data is transmitted to source base station by transmitting element 95, in order to upstream data is transmitted to core by source base station Heart net, or, upstream data, by the data feedback channel set up between core net, is sent out by transmitting element 95 Give core net.

After customer equipment part switches to base station equipment 110, subscriber equipment can continue to measure source base station Channel quality information.Now receive unit 91 and be additionally operable to receive the channel of the source base station that subscriber equipment is measured Quality information, channel measurement information is transmitted to source base station by transmitting element 95, in order to source base station is according to channel Quality information adjusts the resource information of PDSCH.Then unit 91 is received after source base station receives adjustment The resource information of PDSCH, and transmitting element 95 will adjust after the resource information of PDSCH be sent to Subscriber equipment.

Alternatively, in another embodiment, at PDCCH the first period D1 starting scheduling user's set The channel quality of the target BS afterwards, or at subscriber equipment detected is higher than the second period of threshold value D2 Afterwards, or detect that the speed of subscriber equipment declines or after stopping the 3rd period D3, administrative unit 94 send path handover request to mobile management network element, forward the down going channel of core net to mesh with request Mark base station.Or, administrative unit 94 is by the data feedback channel set up between core net, by subscriber equipment Upstream data be sent to core net.

Alternatively, before sending path handover request to mobile management net element, receive unit 91 and receive source The address information of the core net passage that base station sends, or, request source base station sends the ground of core net passage Location information.

Base station equipment 110 can consult to determine above-mentioned period D1, D2 and/or D3 with source base station, or Base station equipment 110 can store predetermined D1, D2 and/or D3.Alternatively, source base station can be by Above-mentioned period D1, D2 and/or D3 carry in part handover request message, are sent to base station equipment 110. Alternatively, it is also possible to configured D1, D2 and/or D3 by network management system.

Figure 12 is the block diagram of base station equipment according to another embodiment of the present invention.The base station equipment 120 of Figure 12 An example be macro base station, including transmitting element 121 with receive unit 122.Transmitting element 121 He Receiving unit 122 can be interface unit.

Transmitting element 121 to the subscriber equipment broadcast identification information of small base station and/or carrier frequency information, or to Subscriber equipment sending measuring configures, and this measurement configuration comprises identification information and/or the carrier frequency letter of small base station Breath.Receive unit 122 and receive the measurement report that subscriber equipment sends.Wherein, transmitting element 121 to When the identification information of subscriber equipment broadcast small base station and/or carrier frequency information, receive the survey that unit 122 receives Identification information and/or the carrier frequency information of the small base station of correspondence is carried in amount report.Transmitting element 121 to During the equipment sending measuring configuration of family, the measurement report receiving unit 122 reception carries corresponding to measuring configuration Measurement result.

It is interior or adjacent with base station 120 that small base station is in base station 120 coverage, or small base station Identification information and/or carrier frequency information or measure configuration be allocated to base station 120 by network management system.

Figure 13 is the block diagram of subscriber equipment according to an embodiment of the invention.The subscriber equipment 130 of Figure 13 Including receiving unit 131 and transmitting element 132.Receive unit 131 and transmitting element 132 can be to connect Mouth unit.

Reception unit 131 receives identification information and/or the carrier frequency information of the small base station of base station broadcast, or Receive the measurement configuration that base station issues, wherein measure identification information and/or the carrier frequency that configuration comprises small base station Information.Transmitting element 132 sends measurement report to base station.Wherein receive base station at reception unit 131 When the identification information of the small base station of broadcast and/or carrier frequency information, the measurement report that transmitting element 132 sends Carry identification information and/or the carrier frequency information of the small base station of correspondence.Or receive receiving unit 131 During the measurement configuration that base station issues, the measurement report that transmitting element 132 sends carries corresponding to measuring configuration Measurement result.

Figure 14 is the block diagram of subscriber equipment according to another embodiment of the present invention.The subscriber equipment 140 of Figure 14 In, the reference that part use same or analogous with Figure 13 is identical, and suitably omit detailed description.

In addition to receiving unit 131 and transmitting element 132, subscriber equipment 140 can also include monitoring Unit 133 and measuring unit 134.Monitoring unit 133 and measuring unit 134 can be processors.

Receive unit 131 to be additionally operable to receive the partial handover command that macro base station sends, monitoring unit 133 According to receiving the partial handover command that unit 131 receives, monitor the PDSCH of macro base station, monitor small base station PDCCH.Additionally, the partial handover command that monitoring unit 133 can also receive according to reception unit 131, Monitor the PHICH of small base station.

Alternatively, in another embodiment, measuring unit 134 measures the channel quality information of base station, sends out Send unit 132 that by small base station, channel quality information is sent to macro base station, in order to macro base station is according to letter Road quality information adjusts the resource information of PDSCH.Then receive unit 131 to receive from target BS The resource information of the PDSCH after the adjustment of macro base station.

Figure 15 is the block diagram of subscriber equipment according to another embodiment of the present invention.The subscriber equipment 150 of Figure 15 Including receiving unit 151 and monitoring unit 152.Receive unit 151 and monitoring unit 152 can be distinguished It is interface unit and processor.

Receive unit 151 and receive the partial handover command that source base station sends, partial handover command corresponding part Switching type, and in part switching type, the PDCCH of subscriber equipment 150 needs to switch to target Base station.Monitoring unit 152, based on partial handover command, monitors the PDCCH after switching, after this switching PDCCH be target BS be subscriber equipment 150 configuration.

Alternatively, as an embodiment, under monitoring unit 152 is received by the PDSCH of source base station Row data.Or monitoring unit 152 receives downlink data, now source by the PDSCH of target BS Base station is as downlink data and the anchor point of the upstream data of subscriber equipment.

Alternatively, as another embodiment, above-mentioned source base station is macro base station, and target BS is small base station.

Communication system according to embodiments of the present invention can include above-mentioned base station equipment and/or subscriber equipment.

Those of ordinary skill in the art are it is to be appreciated that combine each of the embodiments described herein description The unit of example and algorithm steps, it is possible to come real with electronic hardware, computer software or the combination of the two Existing, in order to clearly demonstrate the interchangeability of hardware and software, the most according to function one As property describe composition and the step of each example.These functions are held with hardware or software mode actually OK, application-specific and the design constraint of technical scheme are depended on.Professional and technical personnel can be to each Specifically should be used for using different methods to realize described function, but this realization is it is not considered that surpass Go out the scope of the present invention.

Those skilled in the art is it can be understood that arrive, and for convenience and simplicity of description, above-mentioned retouches The specific works process of system, device and the unit stated, is referred to the correspondence in preceding method embodiment Process, does not repeats them here.

In several embodiments provided herein, it should be understood that disclosed system, device and Method, can realize by another way.Such as, device embodiment described above is only shown Meaning property, such as, the division of described unit, be only a kind of logic function and divide, actual can when realizing There to be other dividing mode, the most multiple unit or assembly can in conjunction with or be desirably integrated into another System, or some features can ignore, or do not perform.Another point, shown or discussed each other Coupling direct-coupling or communication connection can be the INDIRECT COUPLING by some interfaces, device or unit Or communication connection, can be electrical, machinery or other form.

The described unit illustrated as separating component can be or may not be physically separate, makees The parts shown for unit can be or may not be physical location, i.e. may be located at a place, Or can also be distributed on multiple NE.Can select according to the actual needs part therein or The whole unit of person realizes the purpose of the present embodiment scheme.

It addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, Can also be that unit is individually physically present, it is also possible to two or more unit are integrated in a list In unit.Above-mentioned integrated unit both can realize to use the form of hardware, it would however also be possible to employ software function list The form of unit realizes.

If described integrated unit realizes and as independent production marketing using the form of SFU software functional unit Or when using, can be stored in a computer read/write memory medium.Based on such understanding, this The part that the most in other words prior art contributed of technical scheme of invention or this technical scheme Completely or partially can embody with the form of software product, this computer software product is stored in one In storage medium, including some instructions with so that computer equipment (can be personal computer, Server, or the network equipment etc.) perform completely or partially walking of method described in each embodiment of the present invention Suddenly.And aforesaid storage medium includes: USB flash disk, portable hard drive, read only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or light The various medium that can store program code such as dish.

The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited to In this, any those familiar with the art, can be easily in the technical scope that the invention discloses Expect change or replace, all should contain within protection scope of the present invention.Therefore, the protection of the present invention Scope should described be as the criterion with scope of the claims.

Claims

1. a cell switching method, it is characterised in that including:

The measurement report sent according to subscriber equipment and/or the translational speed of described subscriber equipment, determine described The handover type of subscriber equipment is part switching type, wherein in described part switching type, and institute The physical downlink control channel PDCCH stating subscriber equipment needs to switch to target BS；

To described target BS transmitting portion handover request, described part handover request is used for asking described mesh Mark base station configures the described PDCCH that described subscriber equipment is monitored.

2. the method for claim 1, it is characterised in that configure described use at described target BS After the described PDCCH that family equipment is monitored, also include:

Downlink data is sent to described subscriber equipment by the Physical Downlink Shared Channel PDSCH of source base station.

3. method as claimed in claim 2, it is characterised in that also include:

The described subscriber equipment hybrid automatic repeat-request to described downlink data is received from described target BS HARQ feedback information.

4. the method for claim 1, it is characterised in that described part handover request includes described The resource information of the Physical Downlink Shared Channel PDSCH of subscriber equipment, in order to described target BS according to Described resource information configures PDCCH schedule information or the information of control of described subscriber equipment.

5. the method for claim 1, it is characterised in that also include:

Receive the response message of described part handover request from described target BS, described response message represents Described target BS agrees to described part handover request；Or,

The switching receiving described part handover request from described target BS prepares failed message, described switching Prepare failed message and represent that described target BS refuses described part handover request.

6. method as claimed in claim 5, it is characterised in that

Described response message carries the PDCCH information of described target BS；Or,

Described switching prepares failed message and carries failure cause.

7. method as claimed in claim 5, it is characterised in that described receiving from described target BS In the case of the response message of part handover request, also include:

To described subscriber equipment transmitting portion switching command, described partial handover command includes source base station The resource information of PDSCH and/or the PDCCH information of described subscriber equipment.

8. the method as according to any one of claim 1 to 7, it is characterised in that also include:

The upstream data from described subscriber equipment is received from described target BS, and by described upstream data It is transmitted to core net.

9. the method as according to any one of claim 1 to 7, it is characterised in that also include:

The channel quality information of the source base station that described subscriber equipment is measured is received from described target BS；

According to described channel quality information, adjust the resource information of the PDSCH of source base station；

The resource information of the PDSCH of the source base station after adjusting, is sent to institute by described target BS State subscriber equipment.

10. the method as according to any one of claim 1 to 7, it is characterised in that also include:

Consult the resource information of PDSCH for cooperative multipoint transmission with described target BS, determine by Source base station or target BS produce transmission block.

11. methods as claimed in claim 10, it is characterised in that produced transmission by source base station determining During block, also include:

Downlink data packet is carried out media access control MAC process, produces transmission block, and according to negotiation The resource information of PDSCH fractional transmission block is sent to described subscriber equipment by described target BS.

12. methods as claimed in claim 10, it is characterised in that pass determining to be produced by target BS When defeated piece, also include:

Downlink data packet for described subscriber equipment is sent to described target BS, in order to described target Base station carries out MAC process to described downlink data packet, produces transmission block；

Receive the part or all of transmission block that described target BS produces.

13. methods as according to any one of claim 1 to 7, it is characterised in that also include:

Sending downlink data by the PDSCH of target BS to described subscriber equipment, source base station is as institute State upstream data and the anchor point of described downlink data of subscriber equipment.

14. methods as described in any one of claim 1 to 7, it is characterised in that described target BS For small base station.

15. 1 kinds of cell switching methods, it is characterised in that including:

Receiving the part handover request that source base station sends, described part handover request is used for request target base station The physical downlink control channel PDCCH that configuration subscriber equipment is monitored；

Send the response message for described part handover request to described source base station or switching prepares unsuccessfully Message, described response message represents that described target BS agrees to described part handover request, and described switching is accurate Standby failed message represents that described target BS refuses described part handover request.

16. methods as claimed in claim 15, it is characterised in that also include:

17. methods as claimed in claim 15, it is characterised in that also include:

Receive the described subscriber equipment HARQ feedback information to described downlink data；

Described HARQ feedback information is sent to described source base station.

18. methods as according to any one of claim 15 to 17, it is characterised in that described part Handover request includes that the resource information of the PDSCH of described subscriber equipment, described method also include:

PDCCH schedule information or the information of control of described user is configured according to described resource information.

19. methods as according to any one of claim 15 to 17, it is characterised in that to described source Base station sends the response message for described part handover request and includes:

Described switching prepares failed message and carries failure cause.

20. methods as according to any one of claim 15 to 17, it is characterised in that to described In the case of source base station sends described response message, also include:

Upstream data is received from described subscriber equipment；

Described upstream data is transmitted to source base station, in order to upstream data is transmitted to core by described source base station Net, or, by the data feedback channel set up between core net, described upstream data is sent to core Net.

21. methods as according to any one of claim 15 to 17, it is characterised in that also include:

Receive the channel quality information of the source base station that described subscriber equipment is measured；

Described channel quality information is transmitted to described source base station, in order to described source base station is according to described channel Quality information adjusts the resource information of the PDSCH of source base station；

The resource information of the PDSCH of the source base station after adjusting is received from described source base station, and by after adjustment The resource information of PDSCH of source base station be sent to described subscriber equipment.

22. methods as according to any one of claim 15 to 17, it is characterised in that also include:

With the resource information that described source base station consults the PDSCH for cooperative multipoint transmission.

23. methods as according to any one of claim 15 to 17, it is characterised in that also include:

Downlink data, wherein said source base is sent to described subscriber equipment by the PDSCH of target BS Stand the upstream data as described subscriber equipment and the anchor point of described downlink data.

Method as described in 24. any one any one of claim 15-17, it is characterised in that also wrap Include:

After starting first period of PDCCH of scheduling user's set, or examine at described subscriber equipment After the channel quality of the target BS measured is higher than the second period of threshold value, or subscriber equipment detected After speed declines or stopped for the 3rd period,

Send path handover request to mobile management network element, with request, the down going channel of core net is forwarded to Target BS；Or

By the data feedback channel set up between core net, the upstream data of subscriber equipment is sent to core Net.

25. methods as claimed in claim 24, it is characterised in that sending road to mobile management net element Before the handover request of footpath, also include:

Receive the address information of the core net passage that described source base station sends；Or,

Described source base station is asked to send the address information of described core net passage.

26. 1 kinds of cell switching methods, it is characterised in that including:

The partial handover command that reception source base station sends, described partial handover command corresponding part switching type, And in described part switching type, the physical downlink control channel PDCCH of subscriber equipment needs switching To target BS；

Based on described partial handover command, monitor the PDCCH, the PDCCH after described switching after switching Be target BS be described user device configuration.

27. methods as claimed in claim 26, it is characterised in that also include:

Downlink data is received by the Physical Downlink Shared Channel PDSCH of described source base station；Or

Receiving downlink data by the PDSCH of target BS, described source base station is as described downlink data Anchor point with the upstream data of subscriber equipment.

28. methods as described in claim 26 or 27, it is characterised in that described source base station is grand base Standing, described target BS is small base station.

29. 1 kinds of base station equipments, it is characterised in that including:

Determine unit, for the measurement report sent according to subscriber equipment and/or the movement of described subscriber equipment Speed, determines that the handover type of described subscriber equipment is part switching type, wherein in described part In switching type, the physical downlink control channel PDCCH of described subscriber equipment needs to switch to target base Stand；

Request unit, for described target BS transmitting portion handover request, described part handover request For asking described target BS to configure the described PDCCH that described subscriber equipment is monitored.

30. base station equipments as claimed in claim 29, it is characterised in that also include:

Negotiation element, for consulting the money of the PDSCH for cooperative multipoint transmission with described target BS Source information.

31. 1 kinds of base station equipments, it is characterised in that including:

Receiving unit, for receiving the part handover request that source base station sends, described part handover request is used In the physical downlink control channel PDCCH asking described base station equipment configuration subscriber equipment to be monitored；

Response unit, for described source base station send for described part handover request response message or Person switches preparation failed message, and described response message represents that described base station equipment agrees to that the switching of described part please Asking, described switching prepares failed message and represents that described base station equipment refuses described part handover request.

32. base station equipments as claimed in claim 31, it is characterised in that also include:

Negotiation element, for consulting the resource of the PDSCH for cooperative multipoint transmission with described source base station Information.

33. 1 kinds of subscriber equipmenies, it is characterised in that including:

Receive unit, for receiving the partial handover command that source base station sends, described partial handover command pair Should part switching type, and in described part switching type, the physical down of described subscriber equipment controls Channel PDCCH needs to switch to target BS；

Monitoring unit, for based on described partial handover command, monitors the PDCCH after switching, described PDCCH after switching be target BS be described user device configuration.